Clutch



Aug. 9, 1932. J. w. BISHOP 1,370,226

CLUTCH Filed Jan. 27, 1928 5 Sheets-Sheet 1 PM 4770F Aug. 1932- J. w. BISHOP 1,870,226

CLUTCH Filed Jan. 27, 1928 I5 Sheets-Sheet 2 ATTO/P/V'k J. W. BISHOP Aug. 9, 1 932.

CLUTC H 3 Sheets-Sheet 3 Filed Jan. .27, 1928 f .fa qa Z1521??? PatentedAug. 9, 1932 UNIT-ED I STATES PATENT OFFICE JosnrH-w. BIsHOP, or Mus'KnsoN, razor-risen, ASSIGNOR TO 'rnn BRUNSWICK-BALKE- COLLENDEB COMPANY, or CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE CLUTCH.

Application filed. January 27,1928. Serial No. 249,842.

This invention relates vto an improved clutch and has for one of its principal ob jects the provision of means for coupling a driving and a driven shaft wherein the same s are automatically uncoupled after a predetermined movement of the driven shaft regardless of the position of operation of the manual control for the clutch itself.

. Another important object of this invention is to provide a special clutch for use particularly with devices of this sort but which clutch is also adapted for other uses.

- Other objects and advantages will appear as the description proceeds.

Referring to the accompanying drawings: Figure 1 is a top plan view of the improved clutch of this invention, parts being shown in section and parts broken away.

' Figure 2 is a plan view. ofthe clutch casing and associated parts, certain pertinent features being illustratedin dotted lines.

Figure 3 is a view, partially in elevation and partially in section, of themain operating features of the clutch, showing the same inreleased position.

Figure tis a View somewhat similar to Figure 3, portions however being omitted, butvv showing the actuating parts about to Iceautomatically released after an operation or revolution. 1 e V y I Figure 5 is. a detail'view of devices for controlling the movement of a cam shaft.

. Referring particularly to Figure 1, the operating mechanism of the clutch of this invention comprises essentially ashaft 57,

which shaft can be utilized for operating a partial or full revolution cam, or a series of such cams Other uses for the partial or full. revolution of the shaft 57 can be made and will be apparent.

The shaft 57 has fixed thereon a worm gear 58 (Fig. 2) which meshes with aworm 60,0n a hollow shaft 61 (Fig. 3). A series of cam portions 62 are also secured to the shaft :57, and are disposed between a pair of plates 63 each of which has an opening which permits tilting and limited sliding movement of the plates on the shaft 57 (Fig. '5).

; At one end the plates 63 are held in fixed relation by a spacer member 64 having reduced ends mounted toturn in openings in the plates. The spacer member has an opening therein which slidably receives the end of a rod 65 (F igsel and 3) which at its lower end is pivoted on the support 49 and is threaded to receive nuts 66. The nuts are adjustable to vary the tension of a spring 67 coiled about the rod 65 and compressed between the nuts and the spacer member 64:.

Adjacent their other ends the plates 63 are spaced apart by a roller 68. The outer of the two plates extends laterally and is engageable with an abutment 69 on a pivoted arm 70 (Fig. 3) which has a guide portion 71 on which the end of the plate is slidable, the plate constituting a latch for preventing movement of the abutment in a direction to wards the shaft 57.

A screw 7 2 is threaded in the abutment and is engageable with a rod 7 3 which extends through an opening 7& in a guide lug 7 5 on the latchor plate and the rod 73 has a catch 76 which is engageable with the lug 75 on the upward movement of the rod. A spring 77 tends to draw the rod towards the arm 7 0 so as to insure the engagement of the catch with the lug.

lhe upper end of the rod 7 3 can be manu ally controlled in any desired manner.

The arm 70 has an opening therein which receives a rod 82 that is secured to the support 49 and a spring 83 is compressed be tween the arm '7 0 and a nut 84: adjustable on the rod 82.

The arm 70 is divided at its upper end and is secured toa holder 85 for a clutch mem ber 86 which is engageable with a clutch member 87 rigid with the hollow shaft 61.

The clutch member 86 is keyed to slide on a shaft 88 within the hollow shaft 61 an end of which is covered by a cap 90 that is secured to the holder 85. T

The shaft 88 eXtends through the hollow shaft 61 and has a gear 91 thereon which meshes with a gear 92 on a driving shaft93.

In the operation of this clutch the rod 73 is lifted upwardly in any desired mannerv and this upward motion will bring the catch 76 into engagement with the lug 75. Thelug 75 forming part of the end of the outer plate 63,

this end of the plate will accordingly be elevated and will become disengaged from the abutment 69 on the pivoted arm 7 O.

The spring 83 then forces the arm'70 in a clockwise direction as viewed in Fig. 3 and brings the clutch member 86 into engagement with the clutch member 87. The shaft 88 which is being driven continuously is then in driving relation with the hollow shaft 61 which, by means of the worm 60 and the worm gear 58, moves the shaft 57 in the direction indicated by the arrow in Fig. 3.

After the operator releases the latch from engagement with the abutment 69 the latch e driven shaft, means including a pair of clutch is moved to the right .as viewedin Fig. 3 as the rotation of the shaft 57 causes a move-' ment of one of the cams 62 upwardly out 'of engagement with the roller 68, permitting this travel of thelatch. The spring 67 acting upon the spacer member 64 next brings the latch into engagement with the guiding portion 71 of the abutment 69. The continued movement of the shaft 57 then brings the succeeding cam 62 into engagement with the roller 68, forcing the latchto the left as viewed in- Fig. 3 and causing it to displace the abutment 69 and the arm 70, thereby releasing the clutch member 86 from the clutch member 87 and interrupting the drive of the hollow shaft 61. This brings the shaft 57 to rest.

In the event that through a mistake, the

operator should, after the actuation of the manual control member,-contin'ue to hold the rod 7 3 in elevated position, th'is'will not prevent the shaft 57 and the camset he'reon from stopping at the desired point, for the reason that the cam 62 will at all events'force the latch to-the left. This brings the rod 73 into engagement with the screw'72 moving the rod backwardly in the opening 74, and pre venting the catch 76 from retainingthe ing 75. The latch will then drop downwardly into engagement with the guiding portion 71 of the abutment 69 and will move the abutment until the clutch member 86 disengage's from the clutch member 87.

My invention is not limited to the specific details of the modification shown and de-' scribed, but diverse alterations are contemplated within the spirit of the invention,'and

a substantial range of equivalents is contemplated within the scope of the appended claims. 1 I

,What I claim and desire'to secure by Letters Patent is: 7 v

1. The combination of a drivingshaft, a driven shaft, means including a pair of clutch members for transmitting power from said driving shaft to said driven shaft, a cam on said driven shaft. means tending to throw I i one of said clutch members into engagement with the other, means actuated by said cam for throwing said oneof said clutch members out of engagement with said other and holding it out of engagement, said means being from actuating the second mentioned means.

2. The combination of a driving shaft, a

members fortransmitting power from said driving shaft to said driven shaft, a pivoted arm connected to one of said clutch membem for moving the same, resilient means acting on said driven shaft for forcing'jthe tiltable member into engagement with said arm and thereby disengaging one of said clutch mem bars from the other, yieldable means tending to maintain said tiltable member in engagement with'said arm and manually ope means for movingthe tiltable member-out ofengagement with said arm and permitting said one of saidclutch members to reengage said other clutch member.

3. The combinationof adrivin driven shaft a manually controlled member, means operable on the actuation of said manually controlled member to couple said shafts in driving relation, means operative even though said manually controlled member be held continuously in the position in which it initially actuated the first mentioned means, for automatically I uncoupling said shafts after a predetermined movement of said driven shaft, said means comprising cams on the driven shaft',and means for retainin said cams in operative position on the friven shaft, said means comprising a pair of juxtaposed plates slidably mounted with respect to the shaft and inparallel relation to the cams. I 7 4. The combination of a drivin shaft, a driven shaft, a manually controlle member, means operable on the actuation of said manuall controlled member tocouple said shafts in riving relation, means operative-even though said manually controlled member be held continuously in the position: in which it initially actuated the first mentionedmean's,

for automatically uncouplingmsaid shafts shaft, in

plates slidahly mounted with respect to the shaft and in parallel relation to the cams, and resilient means for moving said plates into and out of clutch operating position.

5. The combination of a driving shaft, a driven shaft, a manually controlled member, means operable on the actuation of said manually controlled member to couple said shafts in driving relation, means operative even though said manually controlled member be held continuously in the position in which it initially actuated the first mentioned means, for automatically uncoupling said shafts after a predetermined movement of said driven shaft, said means compris ng cams on the driven shaft, means for retaining said cams in operative position on the driven shaft, said means comprising a pair of juxtaposed plates slidably mounted With respect to the shaft andin parallel relation to the cams, and resilient means for moving said plates into and out of clutch operating position, depending upon the position of the clutch actuating and releasing latch.

JOSEPH W. BISHOP. 

